Process of manufacturing overshoes.



PATENTED OCT. 2

S. SOHWARZSCHILD. PROCESS OF MANUFACTURING OVERSHOES.

APPLICATION FILED JUNE 4, 1906.

UNITED STATES PATENT OFFICE.

ALBRECHT VOGT, E. G. PFAHL, AND

NEW YORK.

PROCESS OF NIANUFACTURING'OVERSI- IOE S.

Specification of LettersPatent.

Applioatiomfiled June 4, 1906. Serial No. 320,183.

To all whom it may concern.

Be it known that I, SoLoMoN SOHWARZS- CHILD, a citizen of the United States, residin at Rochester, in the county of Monroe an State of New York, have invented certain new and useful Im rovements in Processes of Manufacturing ivershoes, of which the following is a specification.

This invention relates more especially to a rocess of manufacturing overshoes designed or emergency wear, and for that purpose are so constructed that they may be conveniently carried in the hand, pocket, hand-bag, or otherwise when not bem worn in order that they may be available, needed.

One form of this class of overshoes is shown and described in an application for Letters Patent of the United States filed by me November 21, 1905, and serially numbered 288,442, and a process for makmg the same forms the subject of an a plication for United States Letters Patent 1906, and serially numbered 308,761.

The primary object of the invention constituting the subject-matter. of said application, as well as that of the present invention, I

is the production of an overshoe which shall be capable of being folded into the smallest possible space without sacrificing strength, durability, and protection against moisture.

' The present invention is, however, believed to be an improvement over the one forming the subject of the above-mentioned application principally in that it provides protection to the edges .of the reinforcing and sole pieces, preventing thereby any liability of said. pieces to peel away from the body of the shoe along their edges.

viewt In order to fullydescribe my resentinvention, a form of overshoe will rst be described, and then- I shall describe the process of manufacture, reference being had to the accompanying drawings, forming a part of this specification, and m which- I Figure 1 represents in side elevation one form of overshoe manufactured according to my improved process; 2, a bottom plan ereof; Fig. .3, a figmentary.- detail section taken along the line 3 3, Fig. 1 Fig. 4, a similar view taken along the line 4 4, Fig.- 1 5, a similar view taken along the line 5 F 53%ig. 1; and Fig. 6 a side elevation of a footp ,The overshoe hereinshownconsists, among form used in the present process;

ed by me March 29,

other parts, of a one-piece or integral rubber coverin 1, preferably of dipped rubber, adapte to envelop the forward portion of the foot, extending under the bottom thereof,

as well as over the top, and passing well up on .the' shank, as at 2, and under the hollow of the foot, as at 3, where it makes an abrupt turn, as at 4, from the sole portion, so as to ALBERT E. VQGT,- OF ROCHESTER,

' Patented Oct. 2, 1906.

press firmly against the shoe of thewearer under the hollow of the foot. The foot entrance is contracted, asshown, and aroundthe outside vthereof extends a reinforcing strip 5, preferably of sheet-rubber. A reinforcing-strip 6, also preferably of sheet-rubber, extends around the ed e of the overshoe along a line to register wit the ed e of the shoe-sole of the wearer and up the s ank, as

Instead of roviding the overshoe with a I continuous so e, as in the case ofvthe form shown in the patent application hereinbefore referred to I may provlde the overshoe with an interrupted sole, such sole consisting in in the form of the overshoe shown in'Figs. 1

' to 5 of two se arate sole-pieces 8 and 9, the a 8o comes, all of the unnecessary material which would be included between those points in a shoe having a continuous sole portion is gotten rid of, and'this'renders possible the employment of much thicker sole protection at the wearing-points without adding to the total amount of material; Moreover, the placing of the sole-pieces as shown in Figs. 1 and 2 does not interfere with the folding of the overshoe, sincethe breaks or folds occuron each side of the piece 8 in the thin material.

This feature. alone is a great advantage. A e may variety of other forms 'of interrupted so be used. I

In order to protect the edges of the various reinforcing-pieces and prevent, them from.v

peeling away from the body of the overshoe, a rubber film 12 may be made to extend over these po'rtions, and by the method of manu-' facture herein described this film may be Y made integral with the body- 1 of the overshoeand to constitute the outer surface thereof, as

shown in Figs. 3, 4, and 5. This film may, however, be of varnish or other material ofiher than the material of the body of the s 0e.

The overshoe herein described may be made as follows: A foot-form, of porcelain, polished hard wood, or other material, which may be in the form shown in Fig. 6, is selected, having a shape and size corresponding to the shape and size that the interior of the overshoe is to be. This foot-form is dipped into a rubber solution consisting of rubber dissolved in naphtha or other solvent, to which solution may be added any desired coloring-matter or other ingredients. After the form is dipped in said solution it is withdrawn therefrom and the naphtha allowed to evaporate to the desired extent from the rubber deposited on said form. This dipping and vaporizing is repeated as many times as is required to obtain the requisite thickness to form the piece 1', not includin the film 12. After the naphtha has been a lowed to vaporize sufliciently from the rubber deposit and after the final (ii of the foregoing dipping process, but wfiile the said deposit is still on the form, the sole-pieces 8 and 9 are put on, being preferably cemented to the portion 1. The reinforcing-piece 6 is put on, and after that the reinforcing-piece 5 is put on, the said reinforcing-pieces being preferably cemented to the piece 1. Then t e whole is dipped into the rubber solution, and this dipping process repeated in the same manner as that above set forth as many times as desired to form the necessary thickness of film 12. After the required reinforcing and sole pieces are ut on and after the material of .the outer fi m has been added to the overshoe 1 the overshoe while still on the foot-form is put through a curing process, which in one form consists in placing the foot-form,-with the overshoe thereon, in a vulcanizer for about an hour under steam-pressure. When the rubber has been properly cured, the form, with the overshoe thereon, is withdrawn from the vulcanizer, when the overshoe maybe taken off the form.

Obviously the form of the overshoe will depend upon the depth to which the foot-form Is immersed in the solution. If the overshoe is to be of the form shown, the foot-form is dipped each time, preferably toe first, to such an extent that the rubber comes well up on the shank. If it is desired to make the overshoe to extend over the heel and back part of the foot as well as the forward portion, a footform would be selected of the proper shape and the whole dipped in the solution.

If desired, the extra sole-pieces herein described may be omitted, also the piece around the foot-entrance; but I prefer to employ these in some form. v

What I claim is 1. The herein-described process of manu- 6 5 facturing overshoes, which consists in depositing rubber in liquid form on the exterior of a foot-form, allowing the said rubber deposit to assume a more solid character, placing a reinforcing-piece of sheet-rubber-containing material on the exterior of said material deposited on said form, depositing a film of rubber-containing material over the first deposit and said reinforcing-piece, and then vulcanizing the whole.

2. The herein-described process of manufacturing overshoes, which consists in dipping a foot-form into a bath of rubber-containing material, withdrawing said form from said bath with a coating of said material deposited on said form, attaching a reinforcingpiece of sheet-rubber to the outside of said material deposited on said foot-form, then dipping the whole into said bath and withdrawing the same therefrom, and then putting the Whole through a curing process.

3. The herein-described process of manufacturing overshoes, which consists in dipping a foot-form into a bath of rubber-containing material, Withdrawing said form from said bath with a coating of said rubber-containing material on said form, cementing a reinforcing-piece of rubber-containing material to the exterior of the material deposited on said form, dipping the form with said material thereon-again into said bath and withdrawing the same therefrom, and then curing the whole.

4:. The herein-described process of manufacturing overshoes, which consists in dipping a foot-form into a bath of rubber-containing material, withdrawing said form from said bath with a coating of said rubber-containing material on said form, repeating the foregoing steps a number of times to form a plurality of superposed deposits of said ma' terial on said form, cementing a sole-piece and a reinforcing-piece of sheet-rubber-containing material to the exterior of the mate rial deposited on said form, dipping the foot- I EIO form with said arts thereon again into said bath and with rawin the same therefrom, and then curing the w ole.

5. The herein-described process of manufacturingovershoes, which consists in dipping a foot-form into a bath of rubber-containing material, withdrawing said form from said bath with a coating of said ma ter1a'l de posited on said form, attaching a reinforcing piece of sheet-rubber-containing material to the exterior of the material depositedon said form, dipping the said parts 1nto said bath .and withdrawing them therefrom, then ouring the Whole. I

6. The herein-described process of manufacturing overshoes, which consists in diping a foot-form into a bath containing rubdip ing the said parts into said bath and her and a volatile ingredient, withdrawing withdrawing the same, and then vulcanizing said form from said bath with a de osit of the the whole in contact with steam under presin edients thereof on said form, a lowing the sure.

5 V0 atile ingredients of said deposit to eva 0- In testimony whereof I affix my signature 15 rate, repeating the fore oing steps a num er in presence of two witnesses. of times to form a plum ity of superposed de- SOLOMON SCHWARZSCHILD. posits on said form, cementing a reinforcing- Witnesses: piece of rubber-cpntainingmaterial to the eX- NELSON G. CORKHILL,

1o terior of the material deposited on said form, J ENNIE SCHWARZSOHILD. 

